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judee,
no you do not have to pin. it is supposed to help with the unfolding, but as you have seen, it can also jumble things up a bit, if you don't put the pins in the right place... I rarely use pins.
smoothing is Dynamic Geometry, so you will have to collapse your smoothing for it to actually be applied as real geometry.
to save your UV map, just click on the camera icon at the bottom of the UV editor screen.
hope that helps
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